Vat dyestuffs of the anthraquinone series



gen and It stands patented 13 cc. 6, 1912?.

urh'rsu srnrsis PATENT oFFicE.

MAX K'UGEL, 3B LEVEBKUSEN, NEAR COLOGNE, GERMANY, ASSIGNOR TO GRASSELLI DYESTUFF GORPURATION, OF NEW YORK, N. Y.,, A CORPORATION 03? DELAVIARE.

VA E D'YESIUFFS OF THE ANTHEAQUINONE' SERIES.

No Drawing. Application filled March 23, 1925, Serial No. 17,839, and in Germany March 81, 1924.

stufi's of the antl'iraquiuone series.

These new products are characterized by their chemical constitution as being alpha eroyl substituted dianthrsquincne-emids of (ii-basic curboxylic holds.

The general constitution of this type compounds can be represented by the formule:

in which X stands for an aroylamino group, Y stands for an aroyiainino group or hydrofor the radical of e dihasic carboxylic acid, as for instance -430- carbonic acid; CO-CO oxalic acid; -COCH -GO nialonio acid; -CO- C H CG succinic acid; --CO-G H CO-- adipic acid; CO-C,H -CO- terephthalic acid, etc. The csrboxylsmid group can be linked to the unthrsquinone nucleus indiflerentiy in alpha or beta-position.

The aroylamino group I; is however, in my invention always atfixed to 'an alpha position. It can itself be suhstitutedby halogen, or by acidyl amino alkyl, aryl, onyellzyl', oxy-aryl, etc. groups. My invention relates to mono-alphzvsroyl-umid substituted anthraquinone amide as well as to products in which two or more eroyl emino groups are contained in the dl-enthraqulnone acid diamid molecule.

itiy new products can he easily reduced to form vets from which vegetable fibers ere dyed exceedingly fast and deep bright shades, ranging from yellow over orange to red. I

These ulphesroyl-amino-di-anthrsquinone amide of dibasic carboxylic acids can be ohtuined in dilierent ways. The anthraquinone ecid amide, as for instance, dinlphw anthrsquinonyl urea,

di-beta-anthraquinonyl urea My invention consists. in new vet dyeti t,

di-slpha-anthraquinonyl-succin-diamid un -co-onrcni-oo-nn can be nitrated in solution of sulfuric acid. The nitro group enters in an alpha position of the anthmquinone nucleus. It is then reduced to the amino group and this latter ercpylatcd as for instance with benzoyl chlo- 11 e. i

It is further possible to condensealphanitro-amino-anthraquinones w th dibasic carboxylic acids or their derivatives such as the anhydrids, or chlorides. The carboxylic acids react with the amino groups to form acid amids substituted by nitro anthraquinone-residue. The nitro groups are then reduced and the resulting amino groups treated with an acylchloride to form the uroylamino groups.

My preferred process is, however, to con dense alpha-aroylaiinino-amino-enth,raquinones with dioasio acid compounds or their derivatives, such as the free acids, the acid nnhydrids, the acid halogenids, etc. When using the acids or their anhydrids the reaction is ellected by adding a. dehydrating agent or a phosphorous hulogenid, thion lchloride, etc. hen using the acyl hal genids no condensation agent is usually re quired and this method is especially adapted for the production of the substituted carbonic acid amids, or ureas. Mixed alphaaroylaniino-diunthraquinone-diamids of dihasic' csrboxylic acids are, for instance, ohtained by condensing an alpha-aroyluminoanthmquinone-mono-amid of a di'hasic ca]? hoxylic acid with an ainino-anthraquinone:

NH-CO-COOE NE:

oHi

(lo-CB:

, It is also possible to condense first an alphaaroylanrinonmino-anthraqninone with one molecular proportion of an acid dichloride at low temperature. The acyl chloride reacts only with one of its chlorine atoms. 1f

yoofl Goo Q00 0o Inorder to further illustrate my invention, the following examples are given, the

parts being by weight.

Example 1.- 6 8.4 parts of 2-amino-4-benzo Ltiminoanthraquinone are sns ended in 1050 parts of nitrohenzol and tested to 80-90((1 At this temperature 9.9 parts of phosgen are introduced While stirring. The temperature of the reaction mass is increased to- 110 C. and kept at this point until no more of the dvestulf is produced.

- The very difiicultly soluble reaction product is filtered hot, washedcn the filter with nitrobenz'ol and alcohol. The so obtained 4.4-dibenzoylamino-Q.2-dianthraquinonylurea .00 my \NH con is a yellow owder, soluble in concentrated sulfuric aci' with a bluish-red color; with sodium hydrosuliite in alkaline solution a Bordeaux red rat is obtained from which cotton is dyed reddish yellow shades.

Ewample $9.-68.i parts of l-amino-l-bem -zoylamino-anthruquinone are heated in suspension oi 1000 parts nitrohenzol to 70 C.

and 12.7 parts oxalylrhloride slowly added.

The reaction mass thickens quickly and under good stirring the temperature is brought to 110 to 115 C. and kept there until no more amino benzoylamino anthraquinone can be detected. The dyestuii' separates as a line crystalline, verr diiiicultly soluble mass; it is filtered oil hot, washed out first with nitrobenzol, then alcohol and finally :1 second, different alpha-aiJ'oylaminoaminoanthraqninonc is added at a somewhat higher temperature, this will react with the second chlorine atom of the acyl chloride, as for instance,

a red color and gives a dull bluish vat from which vegetable fibers are dyed a bright,

strong, and fast orange.

Ewample 3.--68.4 parts 1amino-5-benzoyl-- amino-anthraquinone are heated to 70 0. in a suspension of 1000 parts nitrolienzol, to

which 12.7 parts oxalylchloride are slowly I added. The reaction mass becomes rapidly thick. While stirring violently the temper store is brought up to 110415 (J. and Iropt there until no more l-aminmd-henzwylarni noanthraquinone can be detected. The dyestuil' formed separates as a very diilicultly soluble yellow crystalline owdor. It is liltered ofii hot, washed with nitrohenzol, alcohol and water. The so obtained 5.o-dibonzoylaminoanthraquinone-l.1-oxalyldiarnid has most probably the formula:

It is soluble in concentrated sulfuric acid 20-30 minutes stirring 34.2 ports i-amino-B- 'benzoylelninoanthraquinone are added and the second step ofthe condensation finished at 110 (1., i. e., until ali the 1.5-amino-benzoylaruinoanthraquinone has reacted. The dyestuti formed is filtered oil", washed with nitrobenzol, alcohol and water. t is most probably the 4.5-dihenzoyleniinoanthraquim one-1 .1succinyldiemid or the formula;

I NE

tic-cs;

It is a red powder, soluble in concentrated sulfuric acid with e red color; it gives a Bordeaux red vat from which'cotton is dyed .-fast, brilliant brick-red shades.

Example 5.-29.5 parts 1-anthrequinoneoxeminic acid and 34.2 parts Lsmino--henzoylamincanthre uinone are suspended in 1000 parts nitro enzol, heated to C. and 15 parts phosphoruspentschloride added. The reaction is finished at 110l15 G. The dyestuii is isolated by filtering, washing and drying. It is the hbenzoylaminc-dianthrequinonyl-1.1exalyldiemid, having most probably the formula:

unwo-oo rsn C0. GO \ACO Y 1;.

C ":CGHJ It is u reddish powder, soluble in concentinted sulfuric acid with e. brownish-red @5101 and gives a. dull redd1sh-hlue vat from which vegetable fibers are dyed fast orange shades.

Example 6.50 parts diunthraquinonyl 1.1'-di0Xa-mid 1 15-004 o-Nn are suspended in 500 parts concentrated sulfuric acid 66 B. and at about 15 C. 16.5 parts nitric acid i5 B. slowly added. The nitration is carried out at 15-20 C. for several hours. The nitrocompound is very diflicultly soluble in concentrated sulfuric acid, it is filtered over asbestos and washed to neutrality. It is then suspended in 5000 parts of water and reduced at about C. with 300. parts sodium hydrosulfide solution containing an equivalent of 18 per cent hydrogen sulfide. The dark brownish reduction product separates, it is filtered oii, washed out and dried. The so obtained amino compound is suspended in 500 parts nitrobenzol and treated at 145 C. with 32 parts benzoylchioride. The product ohteined is identical with the 4.-dibenzoylaminoanthraquinone-Ll-oxelyldis.mid described in Example 2.

1. The process of producing eiphseroyianiino-dianthraquinone-diemids of dihasic carhoxylic acids which comprises treating alpha aroylaniino eininoenthrequinones with derivatives of dihssic (ZitifiJGXYllC acids which are capeoie of reacting with the amino groups of the sigche-ercyl-ominoaminoenthrsquinones.

2. The process of pmducing ulphe-eroyieininodianthrsquinouediemids of di-besic carboxylic acids which comprises treating al he. e r o y 1 s. m i n. o-sminoentlnequinones w th the chlorides of dihesic csrhoxylic acids.

3;. The process of producing slphe-benzoyiemino-dienthraquinone'diernids of dihesic carboxylic acids which comprises treating alphaJoenzoylaznino:cminosnthrequinones with the chlorides'of dibesic cerooxylic acids.

4. The process of producing 5.5"-dibenzoylemino dieinthrequ-lnone 1.1" (fits-i3 1 dismid which comprises condensing i-smino 5-loensoylaminoenthmquinone with oxalyichloride.

f; 5 As new products siphe-eroylemincdidiithrequinonediamids of di'ossic carbonylic acids having the genersi formula.

ii c u o nu-neui c sno -Y in which X stands for en eroyiemiuo group.

Y stands for an sroyisniino group or hydro-- gen end it steeds the sedicei of dihesic CflZlJOXIVHC flClll, which pmclucfis arc gonorolly ycllow to (lurk rod powders, very dill].- cultly soluble in organic solvents, soluble in conccntral'ccl sulfuric acid with from red to brown colors, giving with rcllucingogenl s bluish vols from which cotton, after oxidation, is clycil from yellow to orange to red fast slizulos.

6. As new products alpho-aroylaniinw cliontllrglquinonwdimnicls of clibasic carboxyhc acids hcvlng the general .lormula- X--G H53 -NH--R-NH-G,,H,O,-X in which X stands for an uroylamino group and R stands for the racllcal of a Llibasm carboxlylc acid which products are gonorullly yellow to clarl; red powders, vcry d1flicultly soluble in organic solvents, soluble in concentrated sulfuric acid with from red to brown colors, giving Wit-l1 reducing agents bluish vats from which cotton, after oxidation, is clyccl from :JBHOW to orange to roll fast shades.

7. As new products (ll-alpha-bcnzoylamino-diantlimquinone diamicls of (libasic cor-- boxylic acids having the gencrol formula NH-G H O,-Nll--CO--C H, in which R stands for the radical of a dibiisic O 0 i o 0 L c o" I lm (lo-m1,

-wl1icl1 product is a yellow, crystalline powder, very (lillicultly s lublc in 11itrol'lonzol and alcohol, soluble in conocnt Merl sulfuric acid with a doll brownish-rod color. giving with sodium hyorosulfitc a dull bluish vat, from which cotton, fter oxidation, 15 dyed bright;

yellow shades of excellent fostncss.

In testimony whereof I lmvo hereunto sot. my hand.

MAX KUGEL. 

